Preparation of saturants



1927 J. ZAVERTNIK, JR

PREPARATION OF SATURANTS Filed Jan. '2. 1924' IY/ If/ //l Patented July19, 1927.

UNITED STATES 1,636,271 PATENT OFFICE.

JOSEPH ZAVERTNIK, JR., OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BARRETTCOM- PANY, A CORPORATION OF NEW JERSEY.

PREPARATION OF SATURANTS.

Application filed January 7, 1924. Serial No. 684,914.

This invention is for a process and apparatus for preparing materials sothat they can be more readily utilized for desired purposes. Theinvention relates especially to preparing materials which may forexample, be of a bituminous nature so ,that they are more. suitable forthe intended uses. One of the particular uses of the invention is forthe preparation of asphalt obtained as a residue from petroleum oils sothat it may be used as a saturant for, roofing papers, though theinvention is not restricted to this particular use.

One of the objects of the invention is to treat liquid materials so asto impart thereto the correct degree of lluidity. Another object is tomaintain the liquid at a suitable temperature while it is being used.Another object is to subject the liquid to a heat treatment and thenutilize some of the waste heat for maintaining the desired temperature.Another object is to provide a heat transferring medium between thesource of heat and the liquid that is being utilized. An-

other object is to provide a suitable material that may he used as asaturant for waterproofing materials and at the same time to keep it incondition so that it can be readilyutilized for its intended purpose.Other objects and advantages of the invention will be obvious as thedescription proceeds.

The invention will be understood from the description in connectionwith. the accompanying drawing which shows somewhat as diagrammaticallyanarrangement of apparatus with which the invention can be practiced.

In the drawing, reference character 1 inldicates a storage tank forasphalt saturant or flux oil which are derived from petroleum crudes. Aheater 2 provided with a the box 3 and a baflle wall 4 is provided sothat the hot gases or products of combustion pass from the upper portion5 to the lower portion 6 and thence out into a stack or chimney (notshown). Different sorts of fire boxes may be used suitable for differentsolts of fuel. The one shown in the drawing is suitable for liquid fuel.Only one battle wall is necessary but there may be more if desired inthe construction of the furnace.-

A pump 7 is interposed in the pipe 8 which has a valve 9, this pipeleading from the tank 1 to heating device 10 located in the upper orhottest part of the heater 2. For safe continuous operation it isdesired that two pumps 7 and 7 be interposed in the pipe line 8 whichhas valves 9, 9, 9 and 9. Only one pump at a time is used and the valvesare manipulated so that the flow is from storage tank through pump 7 or7 to the heating device 10. The flow of liquid in the heating deviceshould be counter current to the hot gases for high efficiency but it isnot necessary as the flow in the heating device may be in the samedirection as the hot gases. A pipe 11 leads from the heating device 10through the pipes 12, which are provided with valves 13, to the stills14 which are provided with means 15 for blowing air through material inthe stills 14. It is well known that flux oil may be blown with air atthe proper temperature in order to oxidize it into an asphalt having theproper viscosity. Generally speaking, the greater the oxidationaccomplished the higher the melting point of the asphalt pro duced. Whatis ordinarily termed an asphalt saturant may, therefore, be oxidizedfurther so to increase its melting point, thereby making it a moresuitable saturant or, in .l'act, making it suitable for coatingpurposes. A pipe 16 leads from the stills 14 through a. pump 17 into thesaturating tank 18. A supply tank 19 which may be heat insulated or notmay be interposed between the pump 17 and the saturating tank 18. Afterthe material has been oxidized to a suflicient extent instills 14, it ispumped by means of the pump 17 into the saturatim tank 18 or to thesupply tank 19 whic should be at an elevation above the saturating tank18 in order that material will flow from it to the saturating tank bygravity. Reference character 20 indicates a storage tank for a highboiling liquid hydrocarbon, petroleum oil, or coal tar oil preferablyhaving a boiling point somewhat above that of water so as to havesufficient heat absorbing capacity below its boiling point to serve thepurpose hereinafter set forth. A pipe 21 leads from this tank throughpumps 22 loo from whence the material may be pumped through the valvedpipes 23 and 24: to the heating device 25 located near the middleportion of the heater 2 or through valved pipes'26 and 27 to the heatingdevice 28 located in the lowest or coolest part .of the heater 2. Thehigh boiling liquid hydrocarbon, petroleum oil or coal tar oil is pumpedthrough both heating devices 25 and 28 during the operation of the unit.A pump 22 may be provided as an emergency pump in case one of the otherpumps breaks down. Valved pipes are so arranged-that the high boilingliquid hydrocarbon, petroleum oil or coal tar oil can be pumped by pump22 either to the heating device 25 or 28. The valved pipes 29 and 30lead from the heating devices 25 and 28 through the pipe 31 to theheating coils 32 in the tank 18. Instead of having heating coils 32 intank 18 this tank may be surrounded by a jacket into which the heatingoil may be introduced from pipe 31. A valved ipe 33 leads from theheating coils 32 or jac et surrounding the tank 18 to the supply tank20. A valved pipe 34 leads through the pump 35 to the pipe 21 from pipe31.

The operation is as follows: A saturating material such as asphaltsaturant or flux oil is placed in tank 1 and from thence pumped throughthe heating device 10 while the heater 2 is perature to about 425-475"F., when it is then passed to the stills 1 1 and air is blowntherethrough. It has been found that when the temperature has beenincreased sufficiently by means of-the heating devices 10 that theasphalt saturant or flux oil (as the case may be) may be oxidized byblowing a11- therethrough into the tanks 14 without supplying additionalheat as the chemical reactions taking place are sufiicient to maintainthe temperature until the material has been oxidized to the desiredextent. After it has been so oxidized it is pumped by means of the pump17 into the saturating tank 18.

The liquid hydrocarbon, petroleum oil, or coal tar oil in tank 20 ispumped by means ofthe pumps 22 throu h the heating devices 25 and 28 andt enoe through the heating coils 32 which are in tank 18 between theloops of sheet 36 of material to be saturated. In this way heat isgivenup to the material in the tank 18 after'which this oil is recirculatedthrough pipe 33, tank 20, pipe 21, etc., to absorb more heat from theheater 2. A sheet 36 of material to be saturated such as a sheet ofroofing material for example, is passed over and under rollers 37through the saturant in tank 18 thus absorbing this saturant and'becomin waterproofed, fresh saturant being supplied from the stills 14or supply tank 19 as it is being used up in the tank 18 and thetemperature being maintained by the heat from the oil which is beingcirculated by means of the ppmps22. A battery of saturating tanks canmalntalned at constant temperature by regulatingthe quantity of liquidhydrocarbon or oil goin through coils 32 in tank 18 or through thejacket surrounding this tank. The pump 35 is providedso that the oil canthe heating devices 25 or hot so that this raises the tembe recirculatedthrough heaters 25 and 28 a sufiicient number of times' to raise itstemperature to the desired point before it is introduced into the tank32. The pumps 22 each have two outlets so that the material can becirculated through either or both of 28 thus obtaining a better controlof the amount of heat taken up by the oil.

In the claims it is intended that the term an asphalt saturant shallinclude both an unoxidized flux oil and a partially oxidized flux oil.

I claim:

1. In a device of the class described in combination, a heater, meansfor passing a liquid through said heaterin primary heatabsorbingrelation to impart heat thereto, a tank for receiving said hot liquid,means for circulating a heating medium through said heater in secondaryheat-absorbing relation and through said tank out of contact with saidliquid but in heat transferring relationship thereto.

2. In a device of the class described, in combination, a heater, meansfor passing a liquid through said heater inprimar absorbing relationthereto to impart eat to said liquid, a tank for receiving said hotliquid, means for circulating a heating medium through said heater insecondary heat absorbing relation thereto and throng said tank out ofcontact with said liquid but in heat transferring relationship thereto.

3. In a device of the class described, a tank, a heater having two setsof coils therein and means for heating said coils, means for passing aliquid through one of said coils and then into said tank, means forcirculating a liquid through the other set of coils and through saidtank out of contact with put heat transferring relationship to said 4.In a device of the class described, a tank, a heater havin two sets ofcoils therein, one in primary eat-absorbing relation thereto and theother in secondary heatabsorbing relation thereto and means for heatinglsaid coils, means for passing a liquid thru t e primary coils and theninto said tank, means for circulatin thru the secondary coil an thrusaid tank out of contact with, but in heat-transferring relationship to,said liquid, thereb utilizing at least a part of the residual heat in1i'he gases which have heated the primary CO1 5. The process whichcomprises heating an asphalt saturant and transferring it to a tank, andby means of the same source of heat heating an oil having a boilingpoint above that of water and circulating it between the source of heatand said tank to maintain the temperature of said asphalt.

another hquid heat- I 6. The process which comprises heating an asphalt'saturant, subse uently oxidizin the same and transferring 1t to a tank,an

by means of the same source of heat heating point above that of 7 Theprocess which comprises heatingan. asphalt saturant to about 425-475"F., and

transferring it to a tank; by means of the same source of heat heatingan oil having a boiling point above culating it between the source ofheat and that of water and cirsaid tank to in said asphalt.

8. The

a'intain the temperature of process which. comprises heating an asphaltsaturant and transferring it to a tank and,

by means of the sainesource of heat, heating an oil having a boilingpoint above that of water and circulating it be- 20 tween the source ofheat-and said tank out of contact with, butin heat-transferringrelationship said saturant in order to maintain the tem erature thereof.

In testimong w SE ereof I aflix my si nature.

PH ZAVERTNI JR.

